Click around below for this jobs high-tech gear, then click here for more profiles of guys with the worlds coolest professions!

Aron Oakley breaks 100 mph in his Ford Focus Midget racer, but the 28-year-old is used to higher speeds at his day job. As the aerodynamics engineer for Penske Racing's NASCAR team, Oakley oversees wind-tunnel testing at the team's Mooresville, N.C., headquarters -- and in tunnels across the country. The subtle design changes he suggests can make a big difference. "After we tested Ryan Newman's car, he went out and broke a track speed record," Oakley says. "It's great to be a small part of that."